10 years in the making, the Volkswagen 261-MPG XL1 Hybrid is preparing to be unveiled at the upcoming Geneva Motor Show. The design is thought to be the most fuel-efficient and most aerodynamic production car to date with an impressive 261 miles to the gallon. The two-cylinder 47-horsepower diesel motor can reach up to 31 or so miles on its battery power alone on its 27-hp electric motor. Furthermore, the XL1 can reach 0-62 miles per hour in 12.7 seconds and top out at close too 100 mph making it a comfortable drive.